apply: get rid of --index-info in favor of --build-fake-ancestor

diff --git a/builtin-diff.c b/builtin-diff.c
index 2ae60097b8cfddd873a38f3988185d9fde77f511..f77352b40decdc4cf8d2db29102703cb1193b49c 100644 (file)
--- a/builtin-diff.c
+++ b/builtin-diff.c
@@ -13,13 +13,10 @@
 #include "log-tree.h"
 #include "builtin.h"
 
-/* NEEDSWORK: struct object has place for name but we _do_
- * know mode when we extracted the blob out of a tree, which
- * we currently lose.
- */
 struct blobinfo {
        unsigned char sha1[20];
        const char *name;
+       unsigned mode;
 };
 
 static const char builtin_diff_usage[] =
@@ -35,7 +32,7 @@ static void stuff_change(struct diff_options *opt,
        struct diff_filespec *one, *two;
 
        if (!is_null_sha1(old_sha1) && !is_null_sha1(new_sha1) &&
-           !hashcmp(old_sha1, new_sha1))
+           !hashcmp(old_sha1, new_sha1) && (old_mode == new_mode))
                return;
 
        if (opt->reverse_diff) {
@@ -70,8 +67,12 @@ static int builtin_diff_b_f(struct rev_info *revs,
                die("'%s': %s", path, strerror(errno));
        if (!(S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)))
                die("'%s': not a regular file or symlink", path);
+
+       if (blob[0].mode == S_IFINVALID)
+               blob[0].mode = canon_mode(st.st_mode);
+
        stuff_change(&revs->diffopt,
-                    canon_mode(st.st_mode), canon_mode(st.st_mode),
+                    blob[0].mode, canon_mode(st.st_mode),
                     blob[0].sha1, null_sha1,
                     path, path);
        diffcore_std(&revs->diffopt);
@@ -88,8 +89,14 @@ static int builtin_diff_blobs(struct rev_info *revs,
        if (argc > 1)
                usage(builtin_diff_usage);
 
+       if (blob[0].mode == S_IFINVALID)
+               blob[0].mode = mode;
+
+       if (blob[1].mode == S_IFINVALID)
+               blob[1].mode = mode;
+
        stuff_change(&revs->diffopt,
-                    mode, mode,
+                    blob[0].mode, blob[1].mode,
                     blob[0].sha1, blob[1].sha1,
                     blob[0].name, blob[1].name);
        diffcore_std(&revs->diffopt);
@@ -181,6 +188,30 @@ void add_head(struct rev_info *revs)
        add_pending_object(revs, obj, "HEAD");
 }
 
+static void refresh_index_quietly(void)
+{
+       struct lock_file *lock_file;
+       int fd;
+
+       lock_file = xcalloc(1, sizeof(struct lock_file));
+       fd = hold_locked_index(lock_file, 0);
+       if (fd < 0)
+               return;
+       discard_cache();
+       read_cache();
+       refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);
+       if (active_cache_changed) {
+               if (write_cache(fd, active_cache, active_nr) ||
+                   close(fd) ||
+                   commit_locked_index(lock_file))
+                       ; /*
+                          * silently ignore it -- we haven't mucked
+                          * with the real index.
+                          */
+       }
+       rollback_lock_file(lock_file);
+}
+
 int cmd_diff(int argc, const char **argv, const char *prefix)
 {
        int i;
@@ -215,6 +246,7 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
        prefix = setup_git_directory_gently(&nongit);
        git_config(git_diff_ui_config);
        init_revisions(&rev, prefix);
+       rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
 
        if (!setup_diff_no_index(&rev, argc, argv, nongit, prefix))
                argc = 0;
@@ -226,6 +258,13 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                        die("diff_setup_done failed");
        }
        rev.diffopt.allow_external = 1;
+       rev.diffopt.recursive = 1;
+
+       /* If the user asked for our exit code then don't start a
+        * pager or we would end up reporting its exit code instead.
+        */
+       if (!rev.diffopt.exit_with_status)
+               setup_pager();
 
        /* Do we have --cached and not have a pending object, then
         * default to HEAD by hand.  Eek.
@@ -272,6 +311,7 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                                die("more than two blobs given: '%s'", name);
                        hashcpy(blob[blobs].sha1, obj->sha1);
                        blob[blobs].name = name;
+                       blob[blobs].mode = list->mode;
                        blobs++;
                        continue;
 
@@ -329,5 +369,8 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                                             ent, ents);
        if (rev.diffopt.exit_with_status)
                result = rev.diffopt.has_changes;
+
+       if (1 < rev.diffopt.skip_stat_unmatch)
+               refresh_index_quietly();
        return result;
 }